Question: Answer showing ALL steps. Also, can you please let me know which text book can I find more questions like these? 2) A heat exchanger
2) A heat exchanger is to be designed to cool methanol from 95C to 40C. The methanol flowrate is 100,000kg/hr. Cooling water is available at 25C with a maximum output temperature of 40C. The heat capacities of methanol and water can be taken as 2.84kJkg1K1 and 4.20kJkg1K1 respectively. a) Calculate the duty of the heat exchanger (6 marks) b) Sketch the temperature-enthalpy diagram of the system (4 marks) c) Calculate the LMTD for this system (4 marks) d) Assuming the heat exchanger has 1 shell pass and 2 tube passes with a FT factor of 0.85 and assuming U=600Wmm2K1 as an initial estimate for the overall heat transfer coefficient, calculate the estimated heat transfer area (6 marks) e) Outline the steps you would perform to move from your initial estimated area to a final design. You should include the factors you would use to determine fluid allocation (shellside vs tubeside) and how you would re-calculate the U value to compare with the initial estimate. You do not need to perform any further calculations; bullet-point explanations are sufficient (10 marks)
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